11122‑35020 Engine Intake Valve Guide，Cylinder Head Intake Valve Sleeve

Press‑fitted into cylinder‑head bore, this cast‑iron valve guide provides precise guidance for intake valve stem. Under high‑temperature combustion environment, it restricts radial shake of intake valve, cooperates with valve stem seal to block engine‑oil seepage into combustion chamber. Valve sealing effect and oil‑consumption control rely heavily on this small cylinder‑head component.

Long‑time high‑temperature working, continuous valve friction and lubricant aging will enlarge inner bore clearance. Common failure phenomena: blue smoke from exhaust, high engine oil consumption, uneven cylinder compression, accelerated valve seat wear. Many repair shops only replace valve stem seals, while worn valve guide remains unreplaced and oil‑burning problem recurs.This replacement valve guide replicates OEM outer diameter, inner bore size and overall length, adopts anti‑wear cast‑iron material for high‑temperature resistance. Professional press tool is required for installation. Suitable for old‑series pickup engine overhaul.